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Showing 1 to 20 of 38 for “"Grouting"”.
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Turbulent fluid jet excavation in cohesive soil : with particular application to jet grouting
This thesis reviews the jet grouting methodology, and the current state of practice and research. Current methods of prediction of jet grout diameters are highly empirical and site specific, and do not take into account the jet hydrodynamics and soil properties explicitly. A rational model to …
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Impact of Jet Grouting on the Lateral Strength of Soil Surrounding Driven Pile Foundations
Jet grouting was used to strengthen the soft soil surrounding the piles and the pile cap of two full-scale driven pile foundations. Soilcrete columns, created by jet grouting, were placed underneath the pile cap and surrounding the piles of the first foundation. Two rows of soilcrete columns were …
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The performance of polyurethane grout to stabilise hemic peat
… construction on peat. The polyurethane (PU) grouting as an option is similar to the cement base grouting application widely used for ground improvement. However, the PU grouting is a strong lightweight material with very short curing time. The Parit Nipah hemic peat has high natural moisture …
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Planning for monitoring of probe hole drilling and pre-excavation grouting with measurement while drilling (MWD), vibration monitoring, and ground penetrating radar (GPR)
Probe hole drilling and pre-excavation grouting are methods commonly used in rock tunneling to mitigate the significant risk caused by high groundwater pressures and potentially high groundwater inflows. The current state of the practice involves measuring groundwater inflow rates through the probe …
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Experimental evaluation of polyester grout as a ground control measure in underground mines
Chemical grouting has been used to insure the stability of underground mine openings for more than twenty years. The polyurethane grout, which is currently being used, has a limited range of mechanical properties that restrict its utilization. Polyurethane also poses serious threats to miners' …
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Novel methods for monitoring grout penetration in hard rock
Grouting has been used in ground engineering since the early 19th century. Grouts are injected into the ground both for the creation of hydraulic barriers and for ensuring ground stability. Example applications are dam sealing, underground isolation of waste disposal sites, stabilisation of mine …
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Kinetics of microfine cement filtration during constant rate permeation through sands
Permeation grouting is a cost-effective ground improvement technique that involves the injection of grout into the voids of geological material to improve the engineering properties by reducing the permeability and/or increasing the strength. Permeation grouting can be performed with either …
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Multi-physics modeling of heat and particle transfer in porous media
… of bentonite suspensions during permeation grouting in porous media. A numerical model is introduced to capture the two-way interactions between the permeating grout and the porous medium, accounting for changes in rheology, concentration, porosity, and permeability. This model provides new …
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STATIC STRENGTH OF DOUBLE-SKIN GROUTED X-JOINT INFILLED WITH HIGH STRENGTH GROUT
… of tubular joints. Although strengthening by grouting has been considered to be efficient and cost effective, a general lack of sufficient guidance in codes and technical literature means the beneficial effects of grouting cannot readily be taken advantage of. This research effort tries to …
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Influence of sand friction angle, grout stiffness, and confinement on the behavior of acrylamide and sodium silicate grouted sand
In the geotechnical engineering field, grouting is a commonly used option within the plethora of ground improvement methods. Yet, the practice of grouting relies heavily on empirically developed models to estimate strength and predict grouted soil behavior. Collectively, these models consider many …
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Ground Improvement for Liquefaction Mitigation at Existing Highway Bridges
… and formed through densification by compaction grouting or cementation by chemical grouting or jet grouting. A buttress fill at the abutment was unsuccessful.
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Parallel computation in efficient non-linear finite element analysis with applications to soft-ground tunneling project
… in-filled with concrete, while a compensation grouting system was designed to mitigate effects of excavation-induced ground movements on the overlying structures. Unexpectedly large settlements occurred during drift construction and overwhelmed the grouting system that was intended to …
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Diagonal Tension Testing of Interlocking Compressed Earth Block Panels
… such as block strength, grout strength and grouting pattern can influence the results of these types of tests and are examined in this investigation.</p> <p>To study variables affecting diagonal shear strength, 9 panels were tested, consisting of blocks produced by a manual block press. …
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Underpinning strategies for buildings with deep foundations
… discusses these techniques with an emphasis on grouting and micropiling underpinning systems. Furthermore, some practical case studies such as the current Boston Central Artery Project (Big Dig), where these techniques were adopted, are presented showing the main stages of their construction …
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Non-Contact NDT of Concrete Structures Using Air -Coupled Sensors
… impact-echo is also applied to examine the grouting condition of embedded ducts. The poorly-grouted sections are identified within the metal duct.
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Remediation of chromium contaminated soils with colloidal silica
… colloidal silica, is extensively used as a grouting material in the construction of grout curtains. It has low viscosity and is non-toxic, which is suitable for injection to stabilize fine-grained soils. It is also applied as a stabilizer in the in-situ treatment of hazardous waste. Once the …
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Probabilistic assessment of engineering rock properties in Singapore for cavern feasibility
… support using bolts and shotcrete, and grouting, is then estimated. To account for the variability of the ground in the area of interest, probabilistic analyses and assessments of the rock mass parameters derived from the boreholes were carried out. Discrete probabilities were obtained …
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